The California Green Building Standards Code (CGBSC) is also referred to as CALGreen. This code features: Regulations for energy efficiency, water efficiency and conservation, material conservation and resource efficiency, environmental quality, and more.Mandatory provisions for commercial, residential, and public school buildings.Appendices with voluntary provisions for all of these occupancies plus hospitals.Residential and nonresidential provisions are in separate chapters for easier use.Included is a free subscription service for all state updates and supplements. Effective Date: January 1, 2014.